Floor scraping machine having floating scraper



Dec. 18, 1956 A. F. BECKER I 2,774,586

FLOOR SCRAPING MACHINE HAVING FLOATING SCRAPER Filed June 14, 1954 2 Sheets-Sheet 1 INVENTOR. ANTHONY F. BECKER BY WM 0% ATTORNEY Dec. 18, 1956 A. F. BECKER FLOOR .SCRAPING MACHINE HAVING FLOATING SCRAPER 2 Sheets-Sheet 2 Filed June 14, 1954 JNVENTOR. ANTHONY F. BECKER ATTORNEY .on the line 3-3 of Figure l. u Figure 4'is a front elevational sectional view taken on United S a e WWO FLOOR 'SCRAPING MACHINE HAVING FLOATING SCRAPER Anthony F. Becker, Houston, Tex.,

icanFloor Surfacing Machine Company, Toledo, a corporation of Ohio Application June 14, 1954, Serial No. 436,510 9 Claims. (Cl. 262-8) assignor to The Amer- Ohio,

This invention relates to new and useful improvements in a floor scraping machine.

It is an object of this invention to provide a fioor scraping machine for cleaning floors, such as are used in removing floor coverings, such as tile, linoleum and the like.

It is another object of this invention to provide a floor covering removing machine for use on floors that will enable the operator to clean a floor close to the walls of the room and in the corners of the room.

It is another object of the invention to provide a floor cleaning machine of light weight and few working parts that will be inexpensive to manufacture and easy to as-- specifications and illustrated in the accompanying draw ing, wherein:

Figure 1 is a top plan view of the device. Figure 2 is a side elevational view. Figure 3 is a side elevational sectional view, taken the line 4-4 of Figure 2, and

Figure 5 is a front elevational view, in section, taken on the line 5-5 of Figure 2.

Referring now more particularly to the drawings, the numeral 1 designates a framework, which may be formed of any suitable material, such as steel or the like, and which forms a platform and support for a suitable power means, as the electric motor 2. Suitable means of mobilizing the platform are provided, such as the wheels 3, 3 which are joined by an axle 4, which extends between the side members of the framework 1. A suitable handle, as 5, may be provided, which is anchored to the framework 1.

A cam shaft 6 is transversely mounted on the framework 1 and rotates on suitable bearings 7 in the framework. Staggered eccentric cams, as 8, 9, 10, 11, are mounted on the cam shaft 6. A rotated gear, such as the toothed gear 12, is mounted on the cam shaft 6. A rotated gear 13 is mounted on the axle 14, which is in turn mounted in the bearing 15. A pulley 16 is mounted on the other end of the axle 14. Suitable connecting means, such as the chain 17, imparts rotation from the gear 13 to the gear 12 and suitable connecting means, such as the V-belt 18 imparts rotation from the motor. pulley 19 to the pulley 16.

A cutter arm housing 20 is formed on the framework 1 through which a series of transverse cutter arm channels 21 are formed. The channels 21 are positioned directly opposite the respective cams 8, 9, 10, 11 and Patented Dec. 18, 1956 ice cutter arms 22 are mounted in said channels 21 and the arms 22 are formed to fit loosely in said channels 21, the channels being sufiiciently larger that the arms to permit easy movement of the arms therein and providing ample room for vertical movement of the arms. The forwardly extended endsof the arms 22 are beveled at an approximately forty-five degree angle so that cutter blades 23 mounted thereon will have their cutting edges forwardly and downwardly extended. Suitable springs 24 are provided having one end anchored to the framework 1 and the other end anchored to the upper end of the cutter blade 23. The anchor point on the framework is beneath the anchor point on the cutter blade so that the tension applied by the spring will be directed rearwardly and downwardly. The rearwardly extended ends of the cutter arms 22 abut against and are actuated by the cams 8, 9, 10, 11.

In operation the motor 2 rotates the cam shaft -6 through the pulley 19, pulley 16 and the gears 12, 13. The springs 24 .urge the cutter arms 22 rearwardly and the tension on the upper end of the cutter blades tends to soften the cutting action of the blade on the floor surface, and the cutter arm will yield upwardly when an uneven floor is encountered. The operator may tilt the handle. 5,;placing additional weight on the forward end of the machine, and thus increase the pressure of the cutting blades 23 to effect a closer cut. The rear end of the cutter arms 22 areheld in constant contact with the cams on the'cam shaft 6, and as the cam shaft 6 rotates, the arms 22 will be moved outwardly and will be moved rearwardly'by the springs 24 as the respective cams move past the forwardmost point of their rotation.

- The cams 8, 9, 10, 11 are positioned on the cam shaft 6 so that the cutter blades 23 will move forwardly alternately,'to facilitate the smooth operation of the ma chine. The cutter blades 23 are formed of a width to provide a very close fit between the blades, so that a clean path will be cleared fromthefloor. However, the removal of any blade may be readily accomplished by disconnecting the spring on such blade and withdrawing the blade forwardly through the channel 21. Thismay be desirable v wheresmall paths are desired through the fio'or covering. The outer edges of the outside 'blades 23 will be in alignment with the outer margins of the framework 1 so that flooring may be removed along walls and in corners.

While the foregoing is considered a preferred form of the invention, it is by way of illustration only, the broad principle of the invention being defined by the appended claims.

Whatlclaim is:

1. In a floor scraping device, a wheeled framework, a cutter arm housing on said framework, cutter arm channels in said housing, cutter arms loosely mounted in said channels being free to move vertically and longitudinally therein, cutter blades on the forward end of said arms, a rotatable cam shaft mounted on said framework and eccentric cams mounted on said cam shaft, one of said cams being positioned adjacent each of said channels and means for yieldingly maintaining said cutter arms in contact with said eccentric cams and said cutter blades in contact with the floor to be scraped.

2. In a floor scraping device, a wheeled framework, a cutter arm housing on said framework, cutter arm channels in said housing, cutter arms loosely mounted in said channels and being free to move vertically and longitudinally therein, the forward ends of said arms being beveled, cutter blades mounted on the forward end of said arms and extending downwardly and forwardly, a rotatable cam shaft mounted on said framework and eccentric cams mounted on said cam shaft, one of said cams being positioned adjacent each of said channels and means -for-yieldinglymaintaining said-cutter arms in contact with said eccentric cams and said cutter blades in contact with the floor to' -be scraped.

r :3'. I'n a fiber-cleaning devi-ce,'a"wheeledframework, a cutter "arm'h'o'using on said"frameworkpcutter "arm :channels in s'ai'd housing, cutter arms' lo osely mounted in saidchannels and movableverti'cally and longitudinally'therein, cutter blades on the forward end of said arms,

a rotatable cam shaft mounted on said framework and eccentric cams mounted on said cam shaft, one of said cams 'being positioned adjacent each of said channels,

--means for yieldingly maintaining saidcutter blades in 'c'ontact'with'the'fioor to 'be scraped and said cutter arms in'contact withsaid eccentric cams "and movable forward ly thereby and'means on said framework forirnp'art'in'g rotation to said cam shaft.

4. 'In a floor-covering removing machine, a movable framewo'rk, a series of cutter blade arms having cutter bladesbn the extended ends' there'of, mounted on said framework for independent parallel reciprocatory movements relative to the framewrk and being tree to move vertically and longitudinally, means for yieldably maintaining said cutter blades in contact with the floor to be scraped and means in contact with sai'd arms and oper- "able to impart'predetermined relative rec'iprocator'y floorcovering stripping movements thereto.

5. In a floor-covering removing machine, a movable framework, a plurality of floating cutter blades mounted "on said framework in side by side relation and for reinto yieldable contact with the floor to be scraped.

6. A combination as called for in claim 4 wherein said operating means includes an operating cam for each blade operable to contact said blade and move it in one direction, together with a sprinjg oper'able to move the blade in the opposite'directionto maintain said bladein 'onsta'nt'con'tact with said cam and in yieldable contact with the floor to be'scrapedr 7. In a floor-covering removing machine, a movable framework, a cutter blade arm mounted on said framework for reciprocatory movements forwardly and rearwardly thereof said arm having a cutter blade on one end thereof, and being free to move longitudinally and vertically means for yieldably maintaining said cutter blade in contact with the floor to be scraped and means on the framework maintained in constant friction contact with said arm and operable to impart said movements thereto. v

8. In a floor-covering removing machine, a movable framework, channels in said framework a cutter blade mounted in said channels for reciprocatory movements forwardly and rearwardly of said framework, an'd'being free to move vertically and longitudinally in said channels said bl'ade beinginclined to the plane'of movement of the framework and having 'its lower edge projecting forward and sharpened for stripping, and means on the framework in contact with the blade and operable to impart said forward movements thereto 'and'means constantly urging said blades rearwardly to maintain a friction contact with said forward moving means and downwardly in yieldable contact with the floor being scraped.

9. In a floor-covering removing machine, a movable framework, a cutter blade arm mounted on said framework and being freely movable longitudinally and vernererences Cited in the file ofthis patent 'UNITED STATES PATENTS pica-90s Jepson Dec. 1, 1936 2,236,093 Friend Mar. 25, 1941 2,245,544 Miller June 10, 1941 2,279,454 Fischer Apr. 14, 1942 2,465,192 Booth "Mar. 22, 1949 IFOREIGN PATENTS 176,345 Austria Oct. 10,1953 413,615 Italy a May 20, 1946 

